Patrick mcmahon



(Model.) v

P. MGMAHON.

GONG BELL.

Patented Aug. 30,1881.

1i)- A x ITNBSSES INVBNTOR i /ZWZM/wy/ jaw ATTORNEYS.'

NITE STATES FATENT @Frio PATRICK MGMAHON, OF NEW YORK, N. Y.

GONG-BELL.

SPECIFICATION forming part of Letters Patent No. 246,531, dated. August 80, 1881.

Application tiled July 1, 1881. (Model.)

To all whom fit may concern Beit known that I, Punten McMAHoN, of the city, county, and State of New York, have invented a new and Improved Gong-Bell, of which the following is a full, clear, and exact description.

The object of this invention is to obtain in gongs a heavy blow ol` the hammer with a comparatively short movement of the operating-lever, and also to provide a gong that can be used right or lei't hand without change of the mechanism.

The invention consists in a double-slotted cam-piece and T-ended operating-lever combined with the trip-lever ot' the gong, as hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view ot' the improved gong mechanism, and Fig. 2 is a similar view with the parts in the position theyoccupy when the bell is struck.

Similar letters of reference indicate corresponding parts.

A is the plate or frame provided with center post, a, i'or carrying the bell, which is omitted from the drawings.

B is the hammenlever hung on stud b, and provided with a spring, c, by which ,the blow 1s given.

G is the trip-lever hung on a stud, d, and provided with a spring, e, for giving the return movement. The moving end oflevcr C is titted with a trigger, f, engaging hammerlever B. These parts are of ordinary construction. D is the operating-lever hung on a stud, g, and engaging by its inner end a slotted campiece, E, that is hung on the trip-lever G.

The piece E is hung loosely' on the trip-lever by a pin, z', and is formed with two parallel slots, h h, extending in the direction ot' lever D and terminating equidistant from the fulcrum-stud g. The inner end of lever D is T- shape, and is provided. at its terminations with studs or projections k, that enter the slots It l1.. The pin i being between the two slots h, the spring e retains the lever D in a position at right angles to the trip-lever by means of the lugs k at the outer ends of the slots.

With this construction the movement of lever D in either direction draws the trip-lever outward and operates the hammer-lever. The trip-lever is drawn by one or the other ofstuds la acting against the end of' its sloth, and the extent of movement is the same whichever direction the lever D is moved. At the same time but a comparatively short movement of' the operating-lever is required, and the movement is checked by one end ot' the T-lever 1) taking against part E, which operates the triplever C, as may be seen in Fig. 2.

This mechanism is simple and durable, and the gong can be applied right or left hand without shifting any ot' the parts.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent- The combination, with a spring-retracted hammerlever, B, and a trip-lever, C, having triggerf, with spring e, of the cam piece E, hung by pin t' to said lever C, and having the parallel slots h h, and the operating-lever D, l1 ung on stud g, and having aT-end, with studs k k, as and for the purpose described.

PATRICK MCMAHON.

Witnesses:

GEO. D. WALKER, G. SEDGwIoK. 

